US5077516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Generator unit
Assignee: Robert Bosch GmbH
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Filing: 1988-07-01
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Granted: 1991-12-31
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Expires: 2008-07-01
Abstract
Abstract A generator unit for a motor vehicle includes a battery, a generator, an intermediate drive for transmitting a drive torque from the internal combustion engine to said generator, an on-board power supply system, and an evaluating circuit. At least one of input value of engine speed, generator voltage, generator speed, battery voltage, battery current, battery temperature, and consumer means voltage, and at least one of an input value of generator current and generator temperature is input to the evaluating circuit. At least one output value for controlling at least one of a transmission ratio of the intermediate drive and an exciter current of the generator is output from the evaluating circuit. The power supply system is divided into a plurality of parts. This division enables to conform allowable voltage variations in a single part of the power supply system, to requirements of structural components contained in the single part. The evaluating circuit effects individual voltage regulation for the plurality of parts of the power supply system.
Inventors
- 👤 Friedhelm Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:17
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/1469; H02J7/1476
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
176 words
A generator unit for a motor vehicle having an internal combustion engine and consumer means, said generator unit comprising a battery; a generator; an intermediate drive for transmitting a drive torque from the internal combustion engine to said generator; an on-board power supply system; and an evaluating circuit having input means for receiving at least one of an input value of engine speed, generator voltage, generator speed, battery voltage, battery current, battery temperature, and consumer means voltage, and at least one of an input value of generator current and generator part temperature, and output means for outputting at least one output value for controlling at least one of a transmission ratio of said intermediate drive and an exciter current of said generator, said power supply system being divided into a plurality of parts whereby allowable voltage variations in a single part of said power supply system can be conformed to requirements of structural components contained in said single part, said evaluating circuit effecting individual voltage regulation for said plurality of parts of said power supply system.
Claim 2
Dependent Claim
176 words
A generator unit for a motor vehicle having an internal combustion engine and consumer means, said generator unit comprising a battery; a generator; an intermediate drive for transmitting a drive torque from the internal combustion engine to said generator; an on-board power supply system; and an evaluating circuit having input means for receiving at least one of an input value of engine speed, generator voltage, generator speed, battery voltage, battery current, battery temperature, and consumer means voltage, and at least one of an input value of generator current and generator part temperature, and output means for outputting at least one output value for controlling at least one of a transmission ratio of said intermediate drive and an exciter current of said generator, said power supply system being divided into a plurality of parts whereby allowable voltage variations in a single part of said power supply system can be conformed to requirements of structural components contained in said single part, said evaluating circuit effecting individual voltage regulation for said plurality of parts of said power supply system.
Claim 3
Dependent Claim
28 words
A generator unit according to claim 1, wherein the evaluating circuit output at least one additional output value for controlling one of lamp voltage and electronic means voltage.
Claim 4
Dependent Claim
46 words
A generator unit according to claim 1, wherein the evaluating circuit includes a plurality of multi-dimensional characteristic fields containing data corresponding to predetermined generator efficiency, intermediate drive efficiency, allowable temperatures of structural component parts, allowable generator noise, battery characteristic values, and an allowable consumer means voltage.
Claim 5
Dependent Claim
44 words
A generator unit according to claim 1, wherein the evaluating circuit controls the transmission ratio of the intermediate drive in such a way that generator speed is kept within a range in which mechanical energy is converted into electrical energy in an optimal manner.
Claim 6
Dependent Claim
34 words
A generator unit according to claim 1, wherein the generator output can be reduced above at least one of a determined charging state of the battery and sufficient voltage supply of the consumer means.
Claim 7
Dependent Claim
27 words
A generator unit according to claim 5, wherein the unit has means for reducing the generator output by reduction of the generator speed by the intermediate drive.
Claim 8
Dependent Claim
22 words
A generator unit according to claim 4, wherein the generator output is reduced as a load of the internal combustion engine increases.
Claim 9
Dependent Claim
24 words
A generator unit according to claim 1, wherein the unit has means for uncoupling the generator from the internal combustion engine in full-load operation.
Claim 10
Dependent Claim
23 words
A generator unit according to claim 1, wherein priorities can be set in the evaluating circuit for optimization of the most important features.
Claim 11
Dependent Claim
23 words
A generator unit according to claim 1, wherein the generator has a housing and means to fasten the evaluating circuit to the housing.
Claim 12
Dependent Claim
15 words
A generator unit according to claim 1, wherein the evaluating circuit includes error detection means.
Claim 13
Independent Claim
188 words
A method of optimization of operation of a generator unit for a motor vehicle having an internal combustion engine and consumer means, the generator unit including a battery, a generator, an intermediate drive for transmitting a drive torque from the internal combustion engine to said generator, an on-board power supply system, and an evaluating circuit, said method comprising the steps of: dividing the power supply system into a plurality of parts whereby allowable voltage variations in a single part of the power supply system can be conformed to requirements of structural components contained in the single part, the evaluating circuit effecting individual voltage regulation for the plurality of parts of the power supply system; communicating to the evaluating circuit at least one of an input value of engine speed, generator voltage, generator speed, battery voltage, battery current, battery temperature, and consumer means voltage, and at least one of an input value of generator current and generator part temperature for processing therein; and outputting at least one output value for controlling at least one of a transmission ratio of the intermediate drive and an exciter current of the generator.
Claim 14
Independent Claim
188 words
A method of optimization of operation of a generator unit for a motor vehicle having an internal combustion engine and consumer means, the generator unit including a battery, a generator, an intermediate drive for transmitting a drive torque from the internal combustion engine to said generator, an on-board power supply system, and an evaluating circuit, said method comprising the steps of: dividing the power supply system into a plurality of parts whereby allowable voltage variations in a single part of the power supply system can be conformed to requirements of structural components contained in the single part, the evaluating circuit effecting individual voltage regulation for the plurality of parts of the power supply system; communicating to the evaluating circuit at least one of an input value of engine speed, generator voltage, generator speed, battery voltage, battery current, battery temperature, and consumer means voltage, and at least one of an input value of generator current and generator part temperature for processing therein; and outputting at least one output value for controlling at least one of a transmission ratio of the intermediate drive and an exciter current of the generator.
Claim 15
Dependent Claim
28 words
A method according to claim 12, further comprising the step of outputting at least one additional output value for controlling one of lamp voltage and electronic means voltage.
Claim 16
Dependent Claim
43 words
A method according to claim 12, comprising the step of controlling the transmission ratio of the intermediate drive in such a way that generator speed is kept within a range in which mechanical energy is converted into electrical energy in an optimal manner.
Claim 17
Dependent Claim
32 words
A method according to claim 12, comprising the step of reducing generator output above at least one of a determining charging state of the battery and sufficient voltage supply to consumer means.
Claim 18
Dependent Claim
24 words
A method according to claim 12, comprising the step of reducing generator output with an increase of a load of the internal combustion engine.
Claim 19
Dependent Claim
21 words
A method according to claim 13, comprising the step of uncoupling the generator from the internal combustion engine at full-load operation.
References Cited (Backward Citations)
US4044293A
Cited
FR2427724A1
Cited
US4207511A
Cited
US4322630A
Cited
FR2518839A1
Cited
FR2525038A1
Cited
US4542462A
Cited
EP0094685A2
Cited
GB2176666A
Cited
US4670704A
Cited
US5021727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-30 | 1995-07-01 | 1995-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-30 | 1999-07-01 | 1999-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-30 | 2003-07-01 | 2003-12-31 | $7700.00 | Window Closed / Lapsed |